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. fie x o variabil? aleatoare continu?, cu densitatea de probabilitate f : r ? r , ( ) 3 9 1 9 2 , 0 2 0, 0 x xe x f x x ? ? ? ? ? ? ? ? ? > ? ? ? = ? ? ? ? ? , unde ? > 0. a) s? se calculeze m(x ). b) folosind o selec?ie de volum n , s? se g?seasc? un estimator al parametrului ? prin metoda momentelor. c) rezultatele observa?iilor asupra variabilei aleatoare x sunt date în tabel. i x 2 2,5 3 ni 1 18 1 s? se afle valoarea mediei de selec?ie, valoarea dispersiei de selec?ie corectate ?i estima?ia parametrului ? Get the answer
Category: art | Author: Giiwedin Frigyes

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